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JavaScript Fill in the Blanks – Practice Basic Concepts Easily

Test your JavaScript knowledge with fill-in-the-blank exercises. Perfect for beginners to reinforce syntax, logic, and key programming concepts.

🔍 Fill in the Blanks

🟢 Beginner

  1. In JavaScript, you can display a message in a popup using the ________ function.
    2. Answer

    alert

    The `alert()` function displays a popup message to the user.

  2. JavaScript code is usually placed inside the ________ tag in HTML.
    3. Answer

    script

    The `<script>` tag is used to add JavaScript code in an HTML document.

  3. The ________ keyword is used to declare a variable in JavaScript.
    4. Answer

    var

    The `var` keyword is one of the ways to declare a variable in JavaScript.

  4. You can take user input in JavaScript using the ________ function.
    5. Answer

    prompt

    `prompt()` asks the user for input and returns it as a string.

  5. To change the content of an HTML element, use ________ property of `document.getElementById()`.
    6. Answer

    innerHTML

    `innerHTML` allows you to change the text or HTML inside an element.

  6. To include an external JavaScript file, use the ________ attribute inside a `<script>` tag.
    7. Answer

    src

    Use the `src` attribute in a `<script>` tag to include an external JavaScript file.

🟡 Intermediate

🔴 Advanced

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